Which is the value of this expression when j=-2

Step-by-step explanation:

(jk^-2/j^-1k^-3)^3

(-2)(-1)^-2

              ^3

(-2)^-1(-1)^-3

switch negative exponenst to other side

(-2)(-2)(-1)^3

(-1)^2

4(-1)

1

= -4

REMEMBER all to the 3rd power!

(-4)^3

-64

here

step-by-step explanation:

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.